I LED'ed both my Interstates when I had them and was very happy with the results, not just "Wow that's bright" in the garage but also for driving at night.
I did a "One LED one Halogen" comparison before finishing the job:

As far as the beams I didn't do a good job setting up a formal comparison, but the rear tire of the John Deere is halogen, the bad of dirt is LED:

Unfortunately the specific bulbs I used appear to no longer be available on Amazon, but they were "DZG H4 9003 HB2 HD1 6500K CREE" bulbs if any of that heps...